Softening of lead means...

Softening of lead means

melting pure lead at high temperature

removal of impurities , except silver, present in commercial lead

formation of lead only

formation of 100 % pure lead.

Verified by Experts

The correct Answer is:

(B)

GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
DINESH PUBLICATION|Exercise UNIT TEST - 33|1 Videos
GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
DINESH PUBLICATION|Exercise UNIT TEST - 34|1 Videos
GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
DINESH PUBLICATION|Exercise UNIT TEST - 31|1 Videos
EQUILIBRIUM
DINESH PUBLICATION|Exercise Matrix - Match Type Questions|2 Videos
HYDROGEN
DINESH PUBLICATION|Exercise LONG|1 Videos

Softening of hard water is done using sodium aluminium silicate (zeolite) . This causes

Adsorption of `Ca^(2+)` and `Mg^(2+)` ions of hard water replacing `Na^(o+)` ions.

Adsorption of `Ca^(2+)` and `Mg^(2+)` ions of hard water replacing `Al^(3+)` ions.

Both (a) and (b) are true

None is true

sequestraction of `Ca^(2+)` and `Mg^(2+)` ion

sequestraction of `Cl^(-)` and `SO_(4)^(2-)` ion

precipitating the `Ca^(2+)` and `Mg^(2+)` ions as phophates

precipitating the `Ca^(2+)` and `Mg^(2+)` ions as sulphates.

`Ca^(+2)`

`Ba^(+2)`

`Be^(+2)`

`Zn^(+2)`